CMOS integrated CD4013 touch switch - Power Circuit - Circuit Diagram

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle
MOS power IC full range
One-piece inductor

This circuit is used, CMOS integrated circuit CD4013 dual D flip-flops, respectively connected into a monostable circuit and a bistable circuit. The function of the monostable circuit is to perform pulse width shaping on the touch signal to ensure that each touch action is reliable. The bistable circuit is used to drive the transistor Q1 on or off to control the relay.

The following is the basic original image found:

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